coal-fired power

Despite a growing renewable energy portfolio which currently generates 4,300 MW as well as a target to be the United States' leading provider of low-cost, clean energy by 2020, the Tennessee Valley Authority (NYSE: TVC) (TVA) is required to pay significant fines for its Clean Air Act violations.

Here are the Top 10 Renewable Energy News Stories You May Have Missed this Week:

1.  Air Force Scientists Collect 99 Percent of Wave Energy - A growing industry, wave power technology is increasingly becoming more efficient. Scientists at the U.S. Air Force Academy base in Colorado Springs have demonstrated that submerged wave energy converters can harness up to 99 percent of the kinetic energy inherent in an ocean wave.

Last year, U.S. President Obama proclaimed that clean coal is the bridge his country needed to gap the time it would take renewable energy to supply enough power to meet U.S. energy demand.

A new study from Harvard University has found that when the entire life-cycle of coal is considered -- extraction, transport, processing, and combustion -- it poses significant public health and environment hazards.  Cumulatively, the study estimates these hazards cost the American people roughly US$300 to US$500 billion dollars annually.

High-priced coal is driving the United Kingdom to double its electricity generation from biomass in the next two years.